import java.io.*;
import java.util.Scanner;
//进行普通文件的复制
public class demo8 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要复制的文件路径");
        String srcPath = scanner.next();
        System.out.println("请输入要复制到的目标路径");
        String destPath = scanner.next();

        File srcFile  = new File(srcPath);
        if (!srcFile.isFile()){
            System.out.println("输入的要复制的文件路径非法!");
            return;
        }
        File destFile = new File(destPath);
        if (!destFile.isDirectory()){
            System.out.println("输入的要复制到的目标路径非法!");
            return;
        }
        try(InputStream inputStream = new FileInputStream(srcFile);
            OutputStream outputStream = new FileOutputStream(destFile)
        ) {
            while(true){
                byte[] bytes = new byte[1024];
                int n= inputStream.read(bytes);
                if (n == -1){
                    break;
                }
                outputStream.write(bytes,0,n);
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}
